hamilton



(No Model.) 3 sheetssheet 1.

E. lVI. HAMILTON.V TIPI: WRITING MACHINE.

No. 427,858. PatentedMay 13, 1890.

fe-f1 V (No Model.) 3 Sheets-Sheet 2. E. M. HAMILTON. TYPE WRITINGMACH-INE.

No. 427,858. Patented Mey 13, 1890.

, (No Model.) s sheets-sheen s.

E. M. HAMILTON. TYP-E WRITINGMAGHINB.

No. 427,858. Patented May 13, 1890.

UNITED STATES PATENT OFFICE.

EMERY M. HAMILTON, OF NEV YORK, N. Y., ASSIGNOR TO THE HAMILTON TYPEWRITER COMPANY, OF SAME PLACE.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 427,858, dated May 13,1890.

Serial No. 160, '737. (No model.)

To @ZZ whom, it may concern:

Be it known that I, EMEEY M. HAMILTON, of the city of New York, in thecounty and State of New York, and'a citizen Qf the United States ofAmerica,have invented certain new and useful Improvements inType-Vriting Machines, of which the following' is a specification,reference being had to the accompanying drawings, forming part of thesame, in

1o which- Figure l is a view, partly a vertical central section andpartly a side elevation, of a typewriting machine containing myinvention. Fig. 2 isa vertical section on line c Fig. 3.

Fig. 3 is a top view of said machine, certain portions being removed;and Figs. 4, 5, and b are detail views of parts of the same.

My present invention relates only to certain special features of thismachine. It will 2o therefore be unnecessary to particularly describethe parts not embraced in my present claims. f

My invention has for its main object to provide a type-writing machinewherein one linger-key maybe used to actuate two or more type-bars; andit consists in the various features of construction and combinations andarrangements of devices hereinafter more fully described, andparticularly pointed out 3o in the appended claims.

The machine containing the improvements which I'intend to claim hereinmay be generally described as consisting of a series of horizontal ornearly horizontal type levers 3 5 radially arranged around a circle andbearing on their inner ends the types, their outer ends being pivoted toa series of crank-arms by a rocking movement of which the type-leversare moved toward and from the center 4o of the circle where the printingimpression is effected, the rocking movement being communicated to thecrank-arms by the operator by means of keys and suitable intermediatelever'devices. This general construction of machine forms thesubject-matter of Letters Patent No. 357,666, February l5, 1887. In Fig.3 these type-levers, key-levers, and 'keys are represented. Forconvenience and clearness of representation a portion of the typeleversare shown on one side of the ligure 5o and the key-levers on the otherside, all those portions of the machine lying over the keylevers ou theright-hand side and over the type-levers on the left-hand side of themachine being removed to exhibit said levers.

a indicates the type-levers, and d crankarms, to which the outer ends ofthe said levers are pivoted. The latter project from short shafts e,journaled in suitable bearings that rest on a plate or disk F. On thesearms 6o d are formed toothed segments, as seen plainly atj', Fig. 1. l

h indicates a series of rack-levers, the outer ends of which are turnedupward and have formed on them teeth g, constituting them 6 5 rackswhich mesh with the toot-hed segments f. The said rack-levers h arefulcrumed at i on an upwardly-projecting annular flange j, that litsinto and rests upon the inner edge of an annular plate B. The upwardmove- 7o ment of the racks g rocks the crank-arms to throw the innerends of the type-levers carrying the types to the center of the system,and their reverse motions return said levers to their iirst position.(Shown in Fig. 1.) The upward movement of the long arms of said levers7L with the racks g is given by means of a series of pins or shortshafts 7c., that are arranged to move up and down in holes or recesses7o in the bed-plate C, Fig. 2, 8o of the machine. The upper ends ofthese shafts enter and are supported in a series 0f holes -n in anannular plate D, which is supported upon posts m m above the bed-plateC, so as to leave space between C and D for S5 the key-levers b. Thesaid key-levers are pivoted at one end to the said shafts 7a, as at p,Figs. l and 2, the opposite ends engaging with the shafts of the keys c,as at p', in said figures. 9o

E is an upwardly-projecting annular flange formed on an annular plateE', that rests upon the annular plate F, which is itself supported onpillars (not shown) that proj ectvupward from plate B. The flange j,before referredJ to, on which are fulcrumed the levers h, together withthe said levers, the crankarms CZ, the levers a, and flange E, all restupon the plate B, thelevers a passing through vertical slots or openings(shown in heavy black lines) in the flange E and being fulcrumed on thebottom of the said slots or openings.

This machine, so far as above described, will be found substantiallyshown and described in the patent aforesaid.

In the present machine the type-levers and their accessories-the slottedflange E, the crank-arms d, and the rack-levers h-are mounted upon aplate, disk, annulus, or earrier, which is separate or detached andcapable of a rotary motion, the axis of which is coincident with thecenter of the system or series of radial type-levers a and with theprinting or impression point. To this end the plate B is arranged torest loosely upon the annular plate D, that is fixed] y supported onposts m, that rise from the bed-plate C. The plate B is secured andcentered upon the said plate D by means of studs q, which project downbelow the lower surface of the plate D within the said plate, the saidstuds being notched on their outer sides, as seen in Fig. l, and soarranged that when the plate B is laid down centrally upon the plate D,as hereinafter described, the inner edge of the said annular plate Dwill be just in contact with the bottom of the said notches. By thisarrangement the plate B is held centrally upon the annulus or plate D,and may be rotated centrally thereon. Four of these studs are preferablyused, as shown in Fig. 5.

r, Fig. el, represents notches eut in the inner edge of the annulus D,through which in laying down the plate B upon the plate D, the portionsof the ends of the studs q, forming the lower side walls of the notchescut in said studs, may pass. After passing such portions of the studsthrough the notches in plate D, by shifting the plate B upon said plateD the former is locked upon the latter, while it may still rotate uponit, as before described. By this arrangement there may be included inthe system a sufficient number of type-levers to carry the type for boththe capitals and lower-case letters of the alphabet, besides thepunctuation-marks and other desired characters, each lever carrying onlyone type, and each key may be made to actuate successively more than onetype-lever. These levers are preferablyarranged with the capitals andthe lower-case type respectively adjoining each other-that is to say,each capital has its corresponding lower-case letter lying next to it,so that the type-levers are, in fact, in pairs, each pair carrying acapital and a lower-case letter.

In the drawin are shown only one key and key-lever for each pair of thetype-levers, each key-lever being adapted to actuate successively bothof the type-levers of one of the said pairs.

The holes in the plate l, into or through which the upper ends of theshafts 7.: enter when thrown upward by the key-levers, are

equal in number to the type-levers, and upon the lower edges of therack-levers are preferably formed small projections gas seen plainly inFig. G, said figure representing a side View of one of the saidrack-levers 7L. These projections, when the outer ends of the saidlevers are depressed, enter the said holes in the plate B, and when theshafts 7o are raised by the levers bthe upper ends of the said shaftspush against the said projections, and thus force upward the outer endsof the levers z. These projections are not essential, and the saidshafts maybe pushed up directly against the edge of the said levers; butthe construction shown in the drawings is the preferable one, as thesaid projections tend to hold the outer ends of the said levers 7Lsteadily in place and insure contact of the shafts 7c with them. New itis obvious that when the plate B, with the parts resting upon it, is inposition with the levers 7L, which actuate the levers o, carrying thecapital letters, standing immediately over the shafts 7a, the depressionof any one of the keys will operate the typelever with which it isconnected, and thus print a capital letter. Then if the plate l5, withits accessories, is shifted so as to bring the levers 7L, that actuatethe type-levers earrying the lower-case. type over said shafts 7c, thedepression of any one of the keys will in the same way printalower-caselettcr. Thus the shifting of the plate B from the printing of-capitals to lower-case letters, and vice versa, needs to be only thedistance between two contiguous levers 71,. The devices for effectingthis shifting movement are the following:

Projecting from the edge of the plate B is a short arm t. u is acrank-arm fixed on an upright shaft u', journaled in a bracket 11 att-he upper end and at the lower end in a hole or socket in the plate C.w is a connectingrod, one end pivoted in the said crank-arm and theother in the arm t. The throw of this crank-arm u is equal to thedistance between the centers of two of the contiguous levers 7L. On theupper end of the shaft a is secured a crank u2, by means of which thesaid shaft may be rotated by the hand of the operator. The shifting ofthe plate B in one direction is accomplished by giving a half-rotationto the shaft u and the shifting in the reverse direction by a reversehalf-rotation of the said shaft.

w is a spiral spring connected to the arm t, which acts in the directionof rotation of the plate B from right to left, and so when the saidplate is in the position shown in Fig. 3 said spring acts to hold saidplate and the crank u in that position. lVhen from said position thecrank is rotated to shift the said plate in the direction from left toright, the crank, being reversed, is carried slightly beyond its axisand until stopped against the bracket c, when the said spring w will actto hold it firmly in that position.

The operation of this machine is as follows;

ICO

IIO

Then the levers 7L, that are connected with the type-levers carrying thelower-case type, are in position immediately over the shafts 7clower-case letters only will be printed. Then, if it'is desired to printcapital letters, by giving the crank u2 a half-turn the frame or platecarrying the type-levers and their connected actuating-levers isshifted, so as to bring the levers h, that are connected with thetypelevers carrying the capit-als, over the shafts k, when only capitalletters will be printed.

I do not intend here to limit myself to the precise devices which I havedescribed and shown, by which a series of type-levers together, carryingthe types for capital and lower-case letters, are actuated in printingby a series of keylevers and keys, each of which is enabled to actuatealternately one or the other of a pair of type-levers. My invention hereconsists, essentially, in mounting the type bars or levers upon a frame,plate, carrier, or annulus capable of rotation and combining therewith aseries of key-levers, each of which is enabled by such rotation or ashifting of the said rotary part of the machine to actuate successivelymore than one ot the type-levers.

This machine is provided with a paper-carriage for carrying andpresenting the paper to the type actuated by the movement of thekey-levers; butI do not deem it necessary to describe or represent thesame, as it constitutes no part of my present invention.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. The combination of a rotatory annulus or carrier provided with aseries of type-bars, aseries of key-levers less in number than thetype-bars, and detached connections between the key-levers and thetype-bars, whereby one keylever may operate a plurality of typebars.

2.' The combination of a rotatory annulus or carrier, type-bars arrangedin sets thereon, and key-levers adapted each to a set of said bars andbearingr means of engagement with one or the other of the bars of eachset.

3. The combination of a pivoted carrier, type-bars pivoted to andarranged in sets on said carrier, and a series of key-levers, 011e foreach set of type-bars.

4. The combination of a pivoted carrier, type-bars pivoted to andarranged in sets on said carrier, a series of key-levers arranged onefor each set of type-bars, and a lever constructed to turn thetype-carrier.

5. The combination of a pivoted annular carrier, type-bars arrangedthereon, a crank, and a connecting-rod.

6. In a type-Writing machine, the combination of two series oftype-levers arranged together radially in or nearly in a horizontalplane and carrying, one series the types for capital letters and theother series types for the lower-case letters of the alphabet, with aseries of levers equal in number to both series of type-levers andadapted to actuate the said type-levers to move the type to and from thecenter of the system for printing, all of said levers being mounted on aplate or frame ca pable of a rotary movement, Vas and for the purposedescribed.

7. The combination, with the type-levers a, and type-actuating levers h,mounted on the described rotary plate or frame, of key-levers b, mountedin a stationary frame, together with intermediate mechanism,substantially as described, whereby the movement of the severalkey-levers may actuate successively more than one of the type-levers, asand for the purpose described.

S. The combination, with the rotary plate B, and the series of levers aand 7L mounted thereon, of the crank u and connecting-rod fw, as and forthe purpose described.

9. The combination of the plate B, provided with the notched studs q,and on which are the described series of levers h, with the annularplate D, provided on its inner edge with the notches o, whereby theplate B is locked down upon the plate D While it is permitted to rotatethereon, as and for the purpose described.

EMERY M. HAMILTON.

.I/V'itnesses:

A. G. N. VERMLYA, HENRY EICHLING.

